Detail Preserving Continuum Simulation of Straight Hair

Abstract:
Hair simulation remains one of the most challenging aspects of creating virtual characters. Most research focuses on handling the
massive geometric complexity of hundreds of thousands of interacting hairs. This is accomplished either by using brute force simulation or by reducing degrees of freedom with guide hairs. This
paper presents a hybrid Eulerian/Lagrangian approach to handling
both self and body collisions with hair efﬁciently while still maintaining detail. Bulk interactions and hair volume preservation is
handled efﬁciently and effectively with a FLIP based ﬂuid solver
while intricate hair-hair interaction is handled with Lagrangian self-collisions. Thus the method has the efﬁciency of continuum/guide
based hair models with the high detail of Lagrangian self-collision
approaches.